US20220143942A1 - Tire vulcanization device and method - Google Patents
Tire vulcanization device and method Download PDFInfo
- Publication number
- US20220143942A1 US20220143942A1 US17/310,711 US201917310711A US2022143942A1 US 20220143942 A1 US20220143942 A1 US 20220143942A1 US 201917310711 A US201917310711 A US 201917310711A US 2022143942 A1 US2022143942 A1 US 2022143942A1
- Authority
- US
- United States
- Prior art keywords
- vulcanization
- container
- mold
- vent path
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004073 vulcanization Methods 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000000565 sealant Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/46—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles using fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/0617—Venting devices, e.g. vent plugs or inserts
Definitions
- the present technology relates to a tire vulcanization device and method and particularly relates to a tire vulcanization device and method that can, while having a simple configuration, efficiently remove unnecessary air present inside a vulcanization mold in a vulcanization step while suppressing variation due to tire portions.
- a vulcanization bladder is expanded in a closed vulcanization mold and a green tire is then heated at a predetermined temperature and pressed at a predetermined pressure. Accordingly, the unvulcanized rubber forming the green tire is shaped on a tire molding surface of the vulcanization mold. If unnecessary air remains between the closed vulcanization mold and the green tire, the unvulcanized rubber may not be sufficiently pressurized and heated, which may cause vulcanization defects.
- the present technology provides a tire vulcanization device and method that can, while having a simple configuration, efficiently remove unnecessary air present inside the vulcanization mold in the vulcanization step while suppressing variation due to tire portions.
- a tire vulcanization device of an embodiment of the present technology having a center mechanism inserted vertically through a cylindrical vulcanization bladder, a vulcanization mold installed to surround the center mechanism, and a vulcanization container to which the vulcanization mold is attached includes dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold, a center vent path communicating vertically through the center mechanism, an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, a mold interior vent path extending in the vulcanization mold to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container, and a container interior vent path extending in the container component to communicate between an opposing surface opposing the attachment surface and the space, a pluralit
- a tire vulcanization method of an embodiment of the present technology includes attaching a vulcanization mold to a vulcanization container, disposing a green tire transversely inside the vulcanization mold and installing the vulcanization mold to surround a center mechanism inserted vertically through a cylindrical vulcanization bladder with the vulcanization mold open, and vulcanizing a green tire with the vulcanization mold closed, the method further includes providing dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold, providing, in the center mechanism, a center vent path communicating vertically through the center mechanism, providing, in the vulcanization mold, a plurality of mold interior vent paths extending at intervals in the circumferential direction in a plan view to communicate between a tire molding surface and an attachment surface that is respective to a container component
- each of the mold interior vent paths, the container interior vent path, and the space can be made to be in communication.
- air suction machine disposed outside the vulcanization container connected to the lower end of the center vent path in this state, air present inside the vulcanization mold can be discharged to the outside of the container through the mold interior vent path and the container interior vent path that are in communication.
- FIG. 1 is an explanatory diagram illustrating the left half of a tire vulcanization device of an embodiment of the present technology with a vulcanization mold in a closed state in a vertical cross-sectional view.
- FIG. 2 is an explanatory diagram illustrating a container ring, a top plate, and a sector mold of FIG. 1 in a plan view.
- FIG. 3 is an explanatory diagram illustrating a tire vulcanization device with the vulcanization mold of FIG. 1 in an open state.
- FIG. 4 is an explanatory diagram illustrating a container ring, a top plate, and a sector mold of FIG. 3 in a plan view.
- FIG. 5 is an explanatory diagram illustrating a state in which air inside the vulcanization mold of FIG. 1 is suctioned and discharged to the outside of the vulcanization container.
- FIG. 6 is an explanatory diagram illustrating a state in which air is injected from the outside of the vulcanization container into the inside of the vulcanization mold after vulcanization of the green tire of FIG. 1 .
- the tire vulcanization device 1 of an embodiment of the present technology illustrated in FIGS. 1 and 2 (hereinafter referred to as a vulcanization device 1 ) includes a center mechanism 3 , a vertical movement plate portion 2 that moves vertically above the center mechanism 3 , a vulcanization mold 7 (hereinafter referred to as a mold 7 ), and a vulcanization container 10 (hereinafter, referred to as a container 10 ). Furthermore, the vulcanization device 1 includes dividing walls 15 , 16 that hermetically block communication between the inside and outside of the container 10 , and an air suction machine 18 disposed outside the container 10 . A vacuum pump may be used as the air suction machine 18 .
- the vulcanization device 1 further includes an air injection machine 19 disposed outside of the container 10 .
- An air compressor may be used as the air injection machine 19 .
- the air suction machine 18 and the air injection machine 19 are connected, via a switching valve 17 , to the lower end portion of the center vent path 3 h vertically extending through the center post 3 A forming the center mechanism 3 .
- a switching valve 17 By operating the switching valve 17 , either one of the air suction machine 18 and the air injection machine 19 selectively communicates with the center vent path 3 h.
- Only the air suction machine 18 may be disposed outside of the container 10 and only the air suction machine 18 may be connected to the lower end of the center vent path 3 h, or only the air injection machine 19 may be disposed outside the container 10 and only the air injection machine 19 may be connected to the lower end of the center vent path 3 h.
- the vertical movement plate portion 2 moves vertically by a hydraulic cylinder, for example.
- Disc-shaped clamp portions 6 are attached to the center post 3 A at intervals in the vertical direction.
- the upper and lower end portions of a cylindrical vulcanization bladder 5 are gripped by the respective clamp portions 6 .
- the center mechanism 3 is inserted vertically through the vulcanization bladder 5 .
- An injection port 4 a and a discharge port 4 b are provided on an outer circumferential surface of the center mechanism 3 at positions between the top side clamp portion 6 and the bottom side clamp portion 6 .
- the injection port 4 a and the discharge port 4 b are each connected to piping extending downward from the center mechanism 3 .
- a heating medium or a pressurized medium is injected into the vulcanization bladder 5 from the injection port 4 a.
- fluid (heating medium and pressurizing medium) inside the vulcanization bladder 5 is discharged to the outside.
- the container 10 When vulcanizing the green tire T, the container 10 is installed to surround the center mechanism 3 . A mold 7 is attached to the container 10 .
- the container 10 includes a top plate 11 , a bottom plate 12 , a plurality of segments 13 , and a container ring 14 forming container components.
- the container ring 14 is attached to the vertical movement plate portion 2 by bolts, for example.
- a sectional type mold 7 is attached to the container 10 .
- the mold 7 has an annular upper side mold 7 A, an annular lower side mold 7 B, and a plurality of sector molds 7 C that are arcuate in a plan view.
- the top surface 9 b (an attachment surface 9 b described below) of the upper side mold 7 A is opposing and attached to the bottom surface 10 a (an opposing surface 10 a described below) of the top plate 11 .
- the top plate 11 moves vertically with the upper side mold 7 A independent of the vertical movement plate portion 2 (container ring 14 ) by a drive means not illustrated in the drawings.
- the bottom surface 9 b (an attachment surface 9 b described below) of the lower side mold 7 B is opposing and attached to the top surface 10 a (an opposing surface 10 a described below) of the bottom plate 12 .
- the bottom plate 12 is fixed to the ground base in an immovable state.
- the outer circumferential surface 9 b (an attachment surface 9 b described below) of the sector mold 7 C is opposing and attached to the inner circumferential surface 10 a (an opposing surface 10 a described below) of each of the segments 13 .
- each of the sector molds 7 C (the segments 13 ) are arranged in an annular shape around the center mechanism 3 .
- each of the sector molds 7 C (the segments 13 ) is arranged in an annular shape in a plan view, and the annular center of the sector molds 7 C is indicated by a dot-dash line CL.
- the center mechanism 3 (the center post 3 A) is disposed at the annular center CL.
- the annular center CL is the annular center of the upper side mold 7 A and the lower side mold 7 B. While the left half of the vulcanization device 1 is illustrated in FIG. 1 , the right half has a substantially identical structure to that of the left half.
- each of the segments 13 has an inclined surface inclined downward from above toward the outer circumference side.
- Guide grooves extend in the vertical direction along the outer circumferential inclined surface of each of the segments 13 .
- the cylindrical container ring 14 is disposed about the center mechanism 3 (the cylindrical center CL) and moves vertically on the outer circumference side of each of the segments 13 .
- the inner circumferential surface of the container ring 14 has an inclined surface inclined downward from above toward the outer circumference side.
- the inner circumferential inclined surface of the container ring 14 and the outer circumferential inclined surface of each of the segments 13 are disposed opposing each other.
- a plurality of guide keys are arranged at intervals in the circumferential direction on the inner circumferential surface of the container ring 14 .
- the guide keys extend in the vertical direction along the inner circumferential inclined surface of the container ring 14 .
- Each guide key engages a guide groove of the corresponding segment 13 , and the guide key (inner circumferential inclined surface of the container ring 14 ) and the guide groove (outer circumferential inclined surface of the segment 13 ) slide.
- each segment 13 is suspended from the container ring 14 by a guide key engaged with a guide groove.
- a cylindrical upper dividing wall 15 extending downward is attached in the vicinity of the outer circumferential surface of the vertical movement plate portion 2 .
- a cylindrical lower dividing wall 16 extending upward is attached in the vicinity of the outer circumferential surface of the bottom plate 12 . Since the lower end portion of the upper dividing wall 15 and the upper end portion of the lower dividing wall 16 are overwrapped vertically, and the annular sealant 16 s is interposed therebetween, the inside and outside of the container 10 are hermetically blocked.
- the sealant 16 s such as an O-ring, may be fixed to the inner circumferential surface of the lower dividing wall 16 , or may be fixed to the outer circumferential surface of the upper dividing wall 15 .
- the dividing walls 15 , 16 disposed on the outer circumferential side of the container ring 14 form a space S with the container 10 in a closed state of the mold 7 .
- a mold interior vent path 8 h (hereinafter referred to as a vent path 8 h ) extends in the mold 7 and communicates between the tire molding surface 9 a and the attachment surface 9 b respective to the container components 11 , 12 , and 13 .
- a plurality of the vent paths 8 h are formed at intervals in the circumferential direction in a plan view.
- the vent path 8 h is formed opening to the tire molding surface 9 a where air-discharge is required in the vulcanization step.
- vent path 8 h a vent path 8 h extending through the upper side mold 7 A and the lower side mold 7 B in the vertical direction (thickness direction) are formed in the upper side mold 7 A and the lower side mold 7 B.
- the vent path 8 h is described as being greatly exaggerated, however, the so-called vent hole is the vent path 8 h.
- a container interior vent path 10 h (hereinafter referred to as a vent path 10 h ) communicating between the opposing surface 10 a opposing the attachment surface 9 b and the space S extends in the container components 11 , 12 , and 13 .
- a vent path 10 h extending through from the opposing surface 10 a to the outer circumferential surface is formed in the top plate 11 .
- An annular sealant 11 s is fixed to the inner circumferential surface of the vent path 10 h formed at a position of the top plate 11 corresponding to that above the center mechanism 3 .
- a vent path 10 h extending through from the opposing surface 10 a to the top surface in the vicinity of the outer circumferential surface (the surface exposed to the space S) is formed in the bottom plate 12 .
- a vent path 10 h extending through from the opposing surface 10 a to the outer circumferential surface (the surface exposed to the space S) is formed in each of the segments 13 .
- a vent path 10 h extending through from the inner circumferential surface (the surface that contacts the outer circumferential surface of the top plate 11 ) to the outer circumferential surface (the surface exposed to the space S) is formed in the container ring 14 .
- each of the vent paths 8 h, each of the vent paths 10 h, and the space S are in communication.
- the mold interior vent paths 8 h , 10 h extend radially about the center vent path 3 h in a plan view and are in communication.
- An annular circumferential groove 8 g extending in the circumferential direction is formed in the attachment surface 9 b.
- the circumferential groove 8 g communicates between each of the vent paths 8 h opening to the attachment surface 9 b.
- an annular circumferential groove extending in the circumferential direction can be made in the opposing surface 10 a to communicate between each of the vent paths 8 h opening to the attachment surface 9 b.
- the container 10 to which the mold 7 is attached is installed to surround the center mechanism 3 . Then, the green tire T is disposed sideways on the lower side mold 7 B inside the mold 7 which is wide open.
- each of the segments 13 is placed on the top surface of the lower plate 12 to be sandwiched between the top plate 11 and the bottom plate 12 .
- each of the sector molds 7 C (the segments 13 ) is disposed in a position that is expanded in diameter in a plan view.
- each of the sector molds 7 C moves close with respect to the annular center CL, and the sector molds 7 C are assembled in an annular shape to close the mold 7 .
- each of the vent paths 8 h, 10 h, and the space S are automatically in communication.
- the center vent path 3 h and the vent path 8 h are connected in a hermetic manner by a sealant 11 s.
- the air suction machine 18 is operated and unnecessary air a present inside the mold 7 (between the tire molding surface 9 a and the green tire T) is suctioned through the vent paths 8 h , 10 h and the center vent path 3 h that are in communication to discharge the air to the outside of the container 10 .
- the unwanted air a is discharged into the space S through the gap and, as a result, is removed to the outside of the container 10 .
- the vulcanization bladder 5 is sufficiently expanded by injecting heating medium and pressurizing medium from the injection port 4 a into the vulcanization bladder 5 to apply a predetermined pressure to the green tire T, and the green tire T is heated and vulcanized at a predetermined temperature.
- the predetermined vulcanization time has elapsed, the vulcanization of the green tire T is completed, and the vulcanized tire Ta is obtained.
- unnecessary air a can be reliably removed by actively suctioning the air a present between the tire molding surface 9 a and the green tire T, with a simple configuration not using a complex mechanism. Even if the vent paths 8 h are opening to various positions on the tire molding surface 9 a, the unnecessary air a is suctioned toward one place into the center portion of the mold 7 in a plan view (center vent path 3 h ). As a result, unnecessary air a can be efficiently removed while suppressing variation due to the tire portions (the opening positions of the vent path 8 h in the tire molding surface 9 a ).
- the vent paths 8 h, 10 h extending radially about the center vent path 3 h in a plan view and in communication are further advantageous in removing unnecessary air a while suppressing the variation due to the tire portions.
- air a can flow through the circumferential groove 8 g, which is further advantageous in removing unnecessary air a while suppressing the variation due to tire portions.
- the green tire T can be heated while sufficiently pressing against the tire molding surface 9 a. Therefore, vulcanization defects hardly occur in the vulcanized tire Ta, which is advantageous in improving tire quality.
- the mold 7 is opened and the tire Ta is removed from the vulcanization device 1 .
- the vulcanized tire T is adhered to the tire molding surface 9 a.
- the switching valve 17 is operated to communicate the air injection machine 19 to the center vent path 3 h.
- the air injection machine 19 is operated, with the mold 7 closed, to inject the air a into the inside of the mold 7 (between the tire molding surface 9 a and the tire Ta) through the vent paths 8 h, 10 h that are in communication. In this way, the tire Ta is easily peeled from the tire molding surface 9 a.
- the injected air a enters between the outer surface of the vulcanization bladder 5 and the inner surface of the tire Ta, making it easier to peel the vulcanization bladder 5 from the tire Ta.
- the tire Ta is removed from the vulcanization bladder 5 and removed from the vulcanization device 1 .
- Embodiments of the present technology are not limited to a sectional type mold 7 , but can also be applied to a two-part type formed with an upper side mold and a lower side mold disposed vertically opposing each other.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
In a tire vulcanization device and method, when a mold is closed, dividing walls disposed on an outer circumferential side of a container ring form a space with a container and hermetically block communication between the inside and outside of the container, and a center vent path communicating vertically through a center mechanism, a plurality of mold interior vent paths formed in the mold at intervals in the circumferential direction in a plan view, a container interior vent path formed in the container components and communicating between an opposing surface and a space, and the space are made to be in communication, and by an air suction machine disposed outside the container and connected to a lower end portion of the center vent path, unnecessary air present inside the mold is suctioned through the mold interior vent path and the container vent path that are in communication.
Description
- The present technology relates to a tire vulcanization device and method and particularly relates to a tire vulcanization device and method that can, while having a simple configuration, efficiently remove unnecessary air present inside a vulcanization mold in a vulcanization step while suppressing variation due to tire portions.
- In a tire vulcanization step, a vulcanization bladder is expanded in a closed vulcanization mold and a green tire is then heated at a predetermined temperature and pressed at a predetermined pressure. Accordingly, the unvulcanized rubber forming the green tire is shaped on a tire molding surface of the vulcanization mold. If unnecessary air remains between the closed vulcanization mold and the green tire, the unvulcanized rubber may not be sufficiently pressurized and heated, which may cause vulcanization defects.
- As such, in order to remove unnecessary air present between the closed vulcanization mold and the green tire, it has been proposed to form air-discharging paths that communicate the inside and outside of a vulcanization container with respect to a top plate, a bottom plate, and a segment forming the vulcanization container (see Japan Unexamined Patent Publication No. 2018-075728). The unnecessary air described above can be discharged to the outside of the vulcanization container through the respective air-discharging paths. However, air-discharging states vary depending on the opening positions (tire portions) of the air-discharging paths on the tire molding surface. Therefore, there is room for improvement in efficiently removing air while suppressing variation in the air discharging states.
- The present technology provides a tire vulcanization device and method that can, while having a simple configuration, efficiently remove unnecessary air present inside the vulcanization mold in the vulcanization step while suppressing variation due to tire portions.
- A tire vulcanization device of an embodiment of the present technology having a center mechanism inserted vertically through a cylindrical vulcanization bladder, a vulcanization mold installed to surround the center mechanism, and a vulcanization container to which the vulcanization mold is attached includes dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold, a center vent path communicating vertically through the center mechanism, an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, a mold interior vent path extending in the vulcanization mold to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container, and a container interior vent path extending in the container component to communicate between an opposing surface opposing the attachment surface and the space, a plurality of the mold interior vent paths being formed at intervals in a circumferential direction in a plan view and, when the vulcanization mold is closed, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space being in communication.
- A tire vulcanization method of an embodiment of the present technology includes attaching a vulcanization mold to a vulcanization container, disposing a green tire transversely inside the vulcanization mold and installing the vulcanization mold to surround a center mechanism inserted vertically through a cylindrical vulcanization bladder with the vulcanization mold open, and vulcanizing a green tire with the vulcanization mold closed, the method further includes providing dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold, providing, in the center mechanism, a center vent path communicating vertically through the center mechanism, providing, in the vulcanization mold, a plurality of mold interior vent paths extending at intervals in the circumferential direction in a plan view to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container, and providing, in the container component, a container interior vent path extending in the container components to communicate between an opposing surface opposing the attachment surface and the space, when the vulcanization mold is closed, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space being allowed to be in communication, and by an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, air that is present inside the vulcanization mold being suctioned through the mold interior vent path and the container interior vent path that are in communication.
- According to embodiments of the present technology, by closing the vulcanization mold, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space can be made to be in communication. By operating the air suction machine disposed outside the vulcanization container connected to the lower end of the center vent path in this state, air present inside the vulcanization mold can be discharged to the outside of the container through the mold interior vent path and the container interior vent path that are in communication. In other words, with a simple configuration not using a complex mechanism, unnecessary air present inside the vulcanization mold can be actively suctioned toward the center portion of the vulcanization mold in a plan view, using a plurality of the mold interior vent paths formed in the vulcanization mold at intervals in the circumferential direction in a plan view. Therefore, this air can be efficiently removed while suppressing variation due to the tire portions.
-
FIG. 1 is an explanatory diagram illustrating the left half of a tire vulcanization device of an embodiment of the present technology with a vulcanization mold in a closed state in a vertical cross-sectional view. -
FIG. 2 is an explanatory diagram illustrating a container ring, a top plate, and a sector mold ofFIG. 1 in a plan view. -
FIG. 3 is an explanatory diagram illustrating a tire vulcanization device with the vulcanization mold ofFIG. 1 in an open state. -
FIG. 4 is an explanatory diagram illustrating a container ring, a top plate, and a sector mold ofFIG. 3 in a plan view. -
FIG. 5 is an explanatory diagram illustrating a state in which air inside the vulcanization mold ofFIG. 1 is suctioned and discharged to the outside of the vulcanization container. -
FIG. 6 is an explanatory diagram illustrating a state in which air is injected from the outside of the vulcanization container into the inside of the vulcanization mold after vulcanization of the green tire ofFIG. 1 . - Hereinafter, a tire vulcanization device and method of the present technology will be described based on the embodiment illustrated in the figure.
- The
tire vulcanization device 1 of an embodiment of the present technology illustrated inFIGS. 1 and 2 (hereinafter referred to as a vulcanization device 1) includes acenter mechanism 3, a verticalmovement plate portion 2 that moves vertically above thecenter mechanism 3, a vulcanization mold 7 (hereinafter referred to as a mold 7), and a vulcanization container 10 (hereinafter, referred to as a container 10). Furthermore, thevulcanization device 1 includes dividingwalls air suction machine 18 disposed outside the container 10. A vacuum pump may be used as theair suction machine 18. - In this embodiment, the
vulcanization device 1 further includes anair injection machine 19 disposed outside of the container 10. An air compressor may be used as theair injection machine 19. Theair suction machine 18 and theair injection machine 19 are connected, via aswitching valve 17, to the lower end portion of thecenter vent path 3 h vertically extending through thecenter post 3A forming thecenter mechanism 3. By operating theswitching valve 17, either one of theair suction machine 18 and theair injection machine 19 selectively communicates with thecenter vent path 3 h. Only theair suction machine 18 may be disposed outside of the container 10 and only theair suction machine 18 may be connected to the lower end of thecenter vent path 3 h, or only theair injection machine 19 may be disposed outside the container 10 and only theair injection machine 19 may be connected to the lower end of thecenter vent path 3 h. - The vertical
movement plate portion 2 moves vertically by a hydraulic cylinder, for example. Disc-shaped clamp portions 6 are attached to thecenter post 3A at intervals in the vertical direction. The upper and lower end portions of acylindrical vulcanization bladder 5 are gripped by therespective clamp portions 6. Thecenter mechanism 3 is inserted vertically through thevulcanization bladder 5. - An
injection port 4 a and adischarge port 4 b are provided on an outer circumferential surface of thecenter mechanism 3 at positions between the topside clamp portion 6 and the bottomside clamp portion 6. Theinjection port 4 a and thedischarge port 4 b are each connected to piping extending downward from thecenter mechanism 3. A heating medium or a pressurized medium is injected into thevulcanization bladder 5 from theinjection port 4 a. From thedischarge port 4 b, fluid (heating medium and pressurizing medium) inside thevulcanization bladder 5 is discharged to the outside. - When vulcanizing the green tire T, the container 10 is installed to surround the
center mechanism 3. Amold 7 is attached to the container 10. The container 10 includes atop plate 11, abottom plate 12, a plurality ofsegments 13, and acontainer ring 14 forming container components. Thecontainer ring 14 is attached to the verticalmovement plate portion 2 by bolts, for example. - A
sectional type mold 7 is attached to the container 10. Themold 7 has an annularupper side mold 7A, an annularlower side mold 7B, and a plurality ofsector molds 7C that are arcuate in a plan view. - The
top surface 9 b (anattachment surface 9 b described below) of theupper side mold 7A is opposing and attached to thebottom surface 10 a (anopposing surface 10 a described below) of thetop plate 11. Thetop plate 11 moves vertically with theupper side mold 7A independent of the vertical movement plate portion 2 (container ring 14) by a drive means not illustrated in the drawings. Thebottom surface 9 b (anattachment surface 9 b described below) of thelower side mold 7B is opposing and attached to thetop surface 10 a (anopposing surface 10 a described below) of thebottom plate 12. Thebottom plate 12 is fixed to the ground base in an immovable state. The outercircumferential surface 9 b (anattachment surface 9 b described below) of thesector mold 7C is opposing and attached to the innercircumferential surface 10 a (anopposing surface 10 a described below) of each of thesegments 13. - Each of the
sector molds 7C (the segments 13) are arranged in an annular shape around thecenter mechanism 3. In other words, as illustrated inFIG. 2 , each of thesector molds 7C (the segments 13) is arranged in an annular shape in a plan view, and the annular center of thesector molds 7C is indicated by a dot-dash line CL. The center mechanism 3 (thecenter post 3A) is disposed at the annular center CL. The annular center CL is the annular center of theupper side mold 7A and thelower side mold 7B. While the left half of thevulcanization device 1 is illustrated inFIG. 1 , the right half has a substantially identical structure to that of the left half. - The outer circumferential surface of each of the
segments 13 has an inclined surface inclined downward from above toward the outer circumference side. Guide grooves extend in the vertical direction along the outer circumferential inclined surface of each of thesegments 13. - The
cylindrical container ring 14 is disposed about the center mechanism 3 (the cylindrical center CL) and moves vertically on the outer circumference side of each of thesegments 13. The inner circumferential surface of thecontainer ring 14 has an inclined surface inclined downward from above toward the outer circumference side. The inner circumferential inclined surface of thecontainer ring 14 and the outer circumferential inclined surface of each of thesegments 13 are disposed opposing each other. - A plurality of guide keys are arranged at intervals in the circumferential direction on the inner circumferential surface of the
container ring 14. The guide keys extend in the vertical direction along the inner circumferential inclined surface of thecontainer ring 14. Each guide key engages a guide groove of the correspondingsegment 13, and the guide key (inner circumferential inclined surface of the container ring 14) and the guide groove (outer circumferential inclined surface of the segment 13) slide. In this embodiment, eachsegment 13 is suspended from thecontainer ring 14 by a guide key engaged with a guide groove. - A cylindrical
upper dividing wall 15 extending downward is attached in the vicinity of the outer circumferential surface of the verticalmovement plate portion 2. A cylindricallower dividing wall 16 extending upward is attached in the vicinity of the outer circumferential surface of thebottom plate 12. Since the lower end portion of theupper dividing wall 15 and the upper end portion of thelower dividing wall 16 are overwrapped vertically, and theannular sealant 16 s is interposed therebetween, the inside and outside of the container 10 are hermetically blocked. Thesealant 16 s, such as an O-ring, may be fixed to the inner circumferential surface of thelower dividing wall 16, or may be fixed to the outer circumferential surface of theupper dividing wall 15. The dividingwalls container ring 14 form a space S with the container 10 in a closed state of themold 7. - A mold
interior vent path 8 h (hereinafter referred to as avent path 8 h) extends in themold 7 and communicates between thetire molding surface 9 a and theattachment surface 9 b respective to thecontainer components vent paths 8 h are formed at intervals in the circumferential direction in a plan view. Thevent path 8 h is formed opening to thetire molding surface 9 a where air-discharge is required in the vulcanization step. - To describe the
vent path 8 h in detail, avent path 8 h extending through theupper side mold 7A and thelower side mold 7B in the vertical direction (thickness direction) are formed in theupper side mold 7A and thelower side mold 7B. Avent path 8 h extending through each of thesector molds 7C in the radial direction (thickness direction) in plan view is formed in each of thesector molds 7C. In the drawings, thevent path 8 h is described as being greatly exaggerated, however, the so-called vent hole is thevent path 8 h. - A container
interior vent path 10 h (hereinafter referred to as avent path 10 h) communicating between the opposingsurface 10 a opposing theattachment surface 9 b and the space S extends in thecontainer components vent path 10 h in detail, avent path 10 h extending through from the opposingsurface 10 a to the outer circumferential surface is formed in thetop plate 11. Anannular sealant 11 s is fixed to the inner circumferential surface of thevent path 10 h formed at a position of thetop plate 11 corresponding to that above thecenter mechanism 3. Avent path 10 h extending through from the opposingsurface 10 a to the top surface in the vicinity of the outer circumferential surface (the surface exposed to the space S) is formed in thebottom plate 12. Avent path 10 h extending through from the opposingsurface 10 a to the outer circumferential surface (the surface exposed to the space S) is formed in each of thesegments 13. Avent path 10 h extending through from the inner circumferential surface (the surface that contacts the outer circumferential surface of the top plate 11) to the outer circumferential surface (the surface exposed to the space S) is formed in thecontainer ring 14. - When the
mold 7 is closed, thecenter vent path 3 h, each of thevent paths 8 h, each of thevent paths 10 h, and the space S are in communication. In this embodiment, when themold 7 is closed, the moldinterior vent paths center vent path 3 h in a plan view and are in communication. - An annular
circumferential groove 8 g extending in the circumferential direction is formed in theattachment surface 9 b. Thecircumferential groove 8 g communicates between each of thevent paths 8 h opening to theattachment surface 9 b. Alternatively or in addition to thecircumferential groove 8 g, an annular circumferential groove extending in the circumferential direction can be made in the opposingsurface 10 a to communicate between each of thevent paths 8 h opening to theattachment surface 9 b. - Next, a procedure of vulcanizing the green tire T using the
vulcanizing device 1 will be described. - When vulcanizing the green tire T, the container 10 to which the
mold 7 is attached is installed to surround thecenter mechanism 3. Then, the green tire T is disposed sideways on thelower side mold 7B inside themold 7 which is wide open. - Next, as illustrated in
FIG. 3 , theupper side mold 7A is moved downward along with thetop plate 11 in the upper standby position, and thecontainer ring 14 and each of thesegments 13 are moved downward together with the verticalmovement plate portion 2. Accordingly, each of thesegments 13 is placed on the top surface of thelower plate 12 to be sandwiched between thetop plate 11 and thebottom plate 12. In this state, as illustrated inFIG. 4 , each of thesector molds 7C (the segments 13) is disposed in a position that is expanded in diameter in a plan view. - Next, the
container ring 14 together with the verticalmovement plate portion 2 is moved further downward from the state illustrated inFIG. 3 . Accordingly, the outer circumferential inclined surface of each of thesegments 13 is pressed by the inner circumferential inclined surface of thecontainer ring 14 moving downward. As a result, as illustrated inFIGS. 1 and 2 , each of thesector molds 7C moves close with respect to the annular center CL, and thesector molds 7C are assembled in an annular shape to close themold 7. - When the
mold 7 is closed, as illustrated inFIG. 1 , thecenter vent path 3 h, each of thevent paths center vent path 3 h and thevent path 8 h are connected in a hermetic manner by asealant 11 s. - In this state, as illustrated in
FIG. 5 , theair suction machine 18 is operated and unnecessary air a present inside the mold 7 (between thetire molding surface 9 a and the green tire T) is suctioned through thevent paths center vent path 3 h that are in communication to discharge the air to the outside of the container 10. Note that if there is a gap between the members, such as between thesegments 13 and thecontainer ring 14, the unwanted air a is discharged into the space S through the gap and, as a result, is removed to the outside of the container 10. - Next, inside the
closed mold 12, thevulcanization bladder 5 is sufficiently expanded by injecting heating medium and pressurizing medium from theinjection port 4 a into thevulcanization bladder 5 to apply a predetermined pressure to the green tire T, and the green tire T is heated and vulcanized at a predetermined temperature. When the predetermined vulcanization time has elapsed, the vulcanization of the green tire T is completed, and the vulcanized tire Ta is obtained. - As described above, according to the
vulcanization device 1, unnecessary air a can be reliably removed by actively suctioning the air a present between thetire molding surface 9 a and the green tire T, with a simple configuration not using a complex mechanism. Even if thevent paths 8 h are opening to various positions on thetire molding surface 9 a, the unnecessary air a is suctioned toward one place into the center portion of themold 7 in a plan view (center ventpath 3 h). As a result, unnecessary air a can be efficiently removed while suppressing variation due to the tire portions (the opening positions of thevent path 8 h in thetire molding surface 9 a). - As in this embodiment, with the
mold 7 closed, thevent paths center vent path 3 h in a plan view and in communication are further advantageous in removing unnecessary air a while suppressing the variation due to the tire portions. Additionally, with thecircumferential groove 8 g described above being provided, air a can flow through thecircumferential groove 8 g, which is further advantageous in removing unnecessary air a while suppressing the variation due to tire portions. - By removing unnecessary air a, the green tire T can be heated while sufficiently pressing against the
tire molding surface 9 a. Therefore, vulcanization defects hardly occur in the vulcanized tire Ta, which is advantageous in improving tire quality. - In addition, there is also an advantage that it is not necessary to excessively expand the
vulcanization bladder 5 for the purpose of removing unnecessary air a. Furthermore, there is also an advantage that a deep groove or the like for air removal is not required to be formed on the outer surface of thevulcanization bladder 5. Since thevulcanization bladder 5 is repeatedly used by expanding and contracting at high temperatures, these advantages are very advantageous in suppressing damage to thevulcanization bladder 5. - After the green tire T is vulcanized, the
mold 7 is opened and the tire Ta is removed from thevulcanization device 1. Immediately after the vulcanization is completed, the vulcanized tire T is adhered to thetire molding surface 9 a. Thus, in this embodiment, the switchingvalve 17 is operated to communicate theair injection machine 19 to thecenter vent path 3 h. Then, as illustrated inFIG. 6 , theair injection machine 19 is operated, with themold 7 closed, to inject the air a into the inside of the mold 7 (between thetire molding surface 9 a and the tire Ta) through thevent paths tire molding surface 9 a. - At this time, if it is possible to contract the
vulcanization bladder 5 to form a slight gap between the outer surface of thevulcanization bladder 5 and the inner surface of the tire Ta in the vicinity of the bead portion of the tire Ta, the injected air a enters between the outer surface of thevulcanization bladder 5 and the inner surface of the tire Ta, making it easier to peel thevulcanization bladder 5 from the tire Ta. After thevulcanization bladder 5 is peeled from the tire Ta and contracted, the tire Ta is removed from thevulcanization bladder 5 and removed from thevulcanization device 1. - Embodiments of the present technology are not limited to a
sectional type mold 7, but can also be applied to a two-part type formed with an upper side mold and a lower side mold disposed vertically opposing each other.
Claims (8)
1. A tire vulcanization device having a center mechanism inserted vertically through a cylindrical vulcanization bladder, a vulcanization mold installed to surround the center mechanism, and a vulcanization container to which the vulcanization mold is attached, comprising:
dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold;
a center vent path communicating vertically through the center mechanism;
an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path;
a mold interior vent path extending in the vulcanization mold to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container; and,
a container interior vent path extending in the container component to communicate between an opposing surface opposing the attachment surface and the space,
a plurality of the mold interior vent paths being formed at intervals in a circumferential direction in a plan view and, when the vulcanization mold is closed, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space being in communication.
2. The tire vulcanization device according to claim 1 , further comprising an air injection machine disposed outside of the vulcanization container and connected to the lower end portion of the center vent path.
3. The tire vulcanization device according to claim 1 , wherein when the vulcanization mold is closed, the mold interior vent path and the container interior vent path extend radially about the center vent path in a plan view and are in communication.
4. The tire vulcanization device according to claim 1 , wherein an annular circumferential groove extending in the circumferential direction on the attachment surface and allowing the plurality of the mold interior vent paths opening to the attachment surface to be in communication, or an annular circumferential groove extending in the circumferential direction on the opposing surface and allowing the plurality of the container interior vent paths opening to the opposing surface to be in communication, is formed.
5. A tire vulcanizing method, comprising:
attaching a vulcanization mold to a vulcanization container;
disposing a green tire transversely inside the vulcanization mold and installing the vulcanization mold to surround a center mechanism inserted vertically through a cylindrical vulcanization bladder with the vulcanization mold open; and,
vulcanizing a green tire with the vulcanization mold closed,
the method further comprising:
providing dividing walls that are disposed on an outer circumferential side of a container ring forming the vulcanization container, form a space with the vulcanization container, and hermetically block communication between inside and outside of the vulcanization container in a closed state of the vulcanization mold;
providing, in the center mechanism, a center vent path communicating vertically through the center mechanism;
providing, in the vulcanization mold, a plurality of mold interior vent paths extending at intervals in a circumferential direction in a plan view to communicate between a tire molding surface and an attachment surface that is respective to a container component forming the vulcanization container; and,
providing, in the container component, a container interior vent path extending in the container components to communicate between an opposing surface opposing the attachment surface and the space,
when the vulcanization mold is closed, the center vent path, each of the mold interior vent paths, the container interior vent path, and the space being allowed to be in communication, and by an air suction machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, air that is present inside the vulcanization mold being suctioned through the mold interior vent path and the container interior vent path that are in communication.
6. The tire vulcanizing method according to claim 5 , wherein after the green tire is vulcanized, by an air injection machine disposed outside the vulcanization container and connected to a lower end portion of the center vent path, air is injected inside of the vulcanization mold through the mold interior vent path and the container interior vent path that are in communication with the vulcanization mold closed.
7. The tire vulcanization device according to claim 2 , wherein when the vulcanization mold is closed, the mold interior vent path and the container interior vent path extend radially about the center vent path in a plan view and are in communication.
8. The tire vulcanization device according to claim 7 , wherein an annular circumferential groove extending in the circumferential direction on the attachment surface and allowing the plurality of the mold interior vent paths opening to the attachment surface to be in communication, or an annular circumferential groove extending in the circumferential direction on the opposing surface and allowing the plurality of the container interior vent paths opening to the opposing surface to be in communication, is formed.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019031748A JP6741097B1 (en) | 2019-02-25 | 2019-02-25 | Tire vulcanizing apparatus and method |
JP2019-031748 | 2019-02-25 | ||
PCT/JP2019/047016 WO2020174795A1 (en) | 2019-02-25 | 2019-12-02 | Tire vulcanizing apparatus and method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220143942A1 true US20220143942A1 (en) | 2022-05-12 |
Family
ID=72047965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/310,711 Pending US20220143942A1 (en) | 2019-02-25 | 2019-12-02 | Tire vulcanization device and method |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220143942A1 (en) |
JP (1) | JP6741097B1 (en) |
CN (1) | CN113329853B (en) |
RU (1) | RU2769269C1 (en) |
WO (1) | WO2020174795A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU362703A1 (en) * | 1969-06-19 | 1972-12-30 | PRESS FORM FOR POLYMER VOLCANIZATION | |
JPS4826872A (en) * | 1971-08-13 | 1973-04-09 | ||
DE19543276C1 (en) * | 1995-11-20 | 1997-02-06 | Continental Ag | Tire vulcanization mold with ventilation |
TR200300950T2 (en) * | 2000-09-22 | 2006-11-21 | Societe De Technologie Michelin | Device for attaching a base to a tire frame |
JP3878855B2 (en) * | 2002-01-29 | 2007-02-07 | 横浜ゴム株式会社 | Tire vulcanizing method and tire vulcanizing apparatus |
JP2006341415A (en) * | 2005-06-08 | 2006-12-21 | Bridgestone Corp | Mold release method of tire and tire vulcanizer |
ATE543626T1 (en) * | 2007-10-23 | 2012-02-15 | Pirelli | APPARATUS AND METHOD FOR VULCANIZING AND SHAPING TIRES |
JP5444385B2 (en) * | 2012-01-18 | 2014-03-19 | 住友ゴム工業株式会社 | Rigid core for tire formation |
JP5613198B2 (en) * | 2012-05-29 | 2014-10-22 | 住友ゴム工業株式会社 | Tire vulcanization mold |
JP6821953B2 (en) * | 2016-06-02 | 2021-01-27 | 住友ゴム工業株式会社 | Tire manufacturing method |
JP6841612B2 (en) * | 2016-07-25 | 2021-03-10 | Toyo Tire株式会社 | Tire vulcanization molding method |
JP6844203B2 (en) * | 2016-11-08 | 2021-03-17 | 横浜ゴム株式会社 | Tire vulcanization container |
JP6826432B2 (en) * | 2016-12-27 | 2021-02-03 | Toyo Tire株式会社 | Tire vulcanization mold and pneumatic tire |
JP2018118421A (en) * | 2017-01-24 | 2018-08-02 | 住友ゴム工業株式会社 | Pneumatic tire manufacturing method and separation device |
JP6845697B2 (en) * | 2017-01-24 | 2021-03-24 | Toyo Tire株式会社 | Tire vulcanization mold |
-
2019
- 2019-02-25 JP JP2019031748A patent/JP6741097B1/en active Active
- 2019-12-02 CN CN201980089641.XA patent/CN113329853B/en active Active
- 2019-12-02 RU RU2021119564A patent/RU2769269C1/en active
- 2019-12-02 WO PCT/JP2019/047016 patent/WO2020174795A1/en active Application Filing
- 2019-12-02 US US17/310,711 patent/US20220143942A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN113329853B (en) | 2022-11-15 |
WO2020174795A1 (en) | 2020-09-03 |
JP2020131661A (en) | 2020-08-31 |
RU2769269C1 (en) | 2022-03-29 |
JP6741097B1 (en) | 2020-08-19 |
CN113329853A (en) | 2021-08-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7469603B2 (en) | Tire vulcanization method | |
JP3701087B2 (en) | Tire vulcanizing method and apparatus | |
JP6724336B2 (en) | Pneumatic tire vulcanizing apparatus and method | |
US20220143942A1 (en) | Tire vulcanization device and method | |
JP7428875B2 (en) | Tire vulcanization equipment and method | |
KR102254482B1 (en) | Vacuum container for tire vulcanization | |
JP2019214158A (en) | Puncture detection method for tire vulcanizing bladder | |
JP3992463B2 (en) | Tire vulcanizer | |
JP7417080B2 (en) | Tire vulcanization equipment and method | |
JP3878855B2 (en) | Tire vulcanizing method and tire vulcanizing apparatus | |
JP7469594B2 (en) | Tire vulcanization method | |
US20230405951A1 (en) | Heating press and method for vulcanizing a vehicle tire in said heating press under vacuum | |
US20240042714A1 (en) | Heating press and method for vulcanizing a vehicle tire in said heating press under vacuum | |
CN116348278A (en) | Hot press and method for vacuum vulcanizing vehicle tires in a hot press | |
JP6919378B2 (en) | Tire vulcanizer | |
JP7506315B2 (en) | Tire vulcanizing device and method | |
KR101864008B1 (en) | Tire vulcanizing mold container | |
US20230405882A1 (en) | Molding process for eased release of a tire | |
JP2023177819A (en) | Method for detecting puncture in tire vulcanization bladder | |
JP4307013B2 (en) | Opening and closing control method and apparatus for tire vulcanizing mold | |
KR100203449B1 (en) | Pneumatic tyre velcanization method | |
KR20180031113A (en) | Vent plug for tire vulcanizing mold | |
US1387381A (en) | Tire-vulcanizing method and apparatus | |
KR20170055139A (en) | Heating medium supply structure of vulcanizer | |
JP4261313B2 (en) | Fluid supply device and tire vulcanizing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: THE YOKOHAMA RUBBER CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAKAHASHI, YUKIHISA;REEL/FRAME:057223/0948 Effective date: 20210409 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
AS | Assignment |
Owner name: THE YOKOHAMA RUBBER CO., LTD., JAPAN Free format text: CHANGE OF ADDRESS FOR ASSIGNEE;ASSIGNOR:THE YOKOHAMA RUBBER CO., LTD.;REEL/FRAME:065626/0740 Effective date: 20231025 |